I like how easy it was to use with our inventory system (SAP). It has been difficult keeping up in terms of new updates from SAP as well but they do release fixes/updates often which helps. They have also recently released some very robust features such as integrated carrier routing - meaning we can actually route through specific couriers without having someone manually look them all up! This will help us cut down significantly on errors due to incorrect information or time delays caused by manual data entry into their systems.